[JIT] Add more python ir utilities (#69871)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/69871
Test Plan: Imported from OSS
Reviewed By: jbschlosser
Differential Revision: D33515232
Pulled By: eellison
fbshipit-source-id: d48da7b398a3f1a8862789484a4035d874196763
(cherry picked from commit e5976b8b7a4995be25a93601bbae5c52d6d3fca8)
